a(6)=1到a(11)=16分区:
(321) (3211) (431) (531) (541) (641)
(521) (3321) (721) (731)
(3221) (4311) (4321) (4331)
(32111) (5211) (5221) (5321)
(32211) (5311) (5411)
(321111) (32221) (7211)
(33211) (33221)
(43111) (43211)
(52111) (52211)
(322111) (53111)
(3211111) (322211)
(332111)
(431111)
(521111)
(3221111)
(32111111)
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